The new charges come about two weeks after authorities said Rios was caught on a surveillance camera rummaging through students' backpacks. She is accused of stealing money and food from the 3- to 5-year-olds she was supervising in January and February.

Authorities initially reviewed the footage because the bus driver said someone stole $400 from her. They then reviewed additional footage that allegedly shows Rios going through the driver's belongings.